#include<stdio.h>
int main()
{
    int a,b,c ;
    if(scanf("%d %d %d",&a,&b,&c) !=3)
    {
        printf("Invalid input");
        return 0;
    }
    if(a<=0 || a>=1000000 || b<=0 || b>=1000000 || (c !=0&& c!=1))
    {
        printf("Invalid input\n");
        return 0;
    }
    if(c==0)
    {
        printf("Account Inactive\n");
        return 0;
    }
    if(a>b)
    {
        printf("Insufficient Balance");
        return 0;
    }
    float  remainingBalance = b-a;
    printf("%.2f\n" , remainingBlance);
    
    
    
    
    return 0;
}